Abstract: One embodiment provides a system and method for monitoring performance of a network. During operation, in response to receiving a performance-monitoring request, the system can select a plurality of network devices along an end-to-end path from an application server to a terminal device and configure each selected network device to function as an observation point to obtain flow-specific packet information. The system can receive, from each observation point, the flow-specific packet information and aggregate flow-specific packet information received from multiple observation points to obtain performance data associated with one or more segments along the end-to-end path, each segment being defined by a pair of observation points.